Building block from a toy building set



FIG. 1 is a top perspective view of my ornamental design for a building block from a toy building set;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines in FIGS. 5 & 6 are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a building block from a toy building set, as shown and described. 